日本研制成功一种一次性使用的新型塑料保鲜膜,它是由两层透水性极好的尼龙半透明膜组成,两层膜之间装有渗透压高的砂糖糖浆。利用这种塑料膜来包装果蔬,能慢慢地吸收果蔬表面渗出的水分,从而达到保鲜目的。英国研制成了一种可食用的水果保鲜剂,它是由蔗糖、淀粉、脂肪酸和聚脂 Japan successfully developed a one-time use of a new type of plastic wrap, which is composed of two layers of excellent water permeability nylon translucent film, between the two films with high osmotic pressure of sugar syrup. Use of this plastic film to package fruits and vegetables, fruits and vegetables can slowly absorb the exudation of water, so as to achieve the purpose of preservation. British developed into a edible fruit preservative, which is composed of sucrose, starch, fatty acids and polyester